Re: Primeval series 4
It seems to have been an accidental consequence of whatever Nick and Helen did together back in the Permian, since they returned from there to the altered timeline.
One of them must have stepped on a butterfly.
Abba Anthony [St. Anthony the Great] said, "A time is coming when men will go mad, and when they see someone who is not mad, they will attack him, saying, 'You are mad; you are not like us.' " -- Wisdom of the Desert Fathers